Heat dissipating lamp holder



United States Patent [72] Inventor Gil C. Sanchez Bronx, New York [21] Appl. No. 724,471 [22] Filed April 26, 1968 [45] Patented Dec. 8, 1970 [73] Assignee beecraft Manufacturing Company, Inc.

Long Island City, New York [54] HEAT DISSIPATING LAMP HOLDER 5 Claims, 3 Drawing Figs.

[52] US. Cl. 240/47, 3 39/1 12 [51] lnt.Cl. F2lv 29/00 [50] Field of Search 240/47; 3 39/1 1 2 [56] References Cited UNITED STATES PATENTS 2,278,916 4/1942 Critoph et a1 240/47 2,879,977 3/1959 Trought r 339/112 3,402,383 9/1968 Hy Hilzen 339/112 3,431,540 3/1969 Kopelman el al 339/112 Primary Examiner-John M. Horan Assistant Examiner-Robert P. Greiner Attorney-Bertram Frank ABSTRACT: An apparatus for dissipating heat from a lamp holder by the use of bushings which act as baffles providing large skin areas exposed to the air or surrounding media. The bushings are made of two dissimilar materials and are a]- temately positioned on the lamp holder so that the dissimilar materials are in juxtaposition with each other. The dissimilar materials are beryllia and steatite which have excellent heat dissipating properties especially when they are placed next to each other.

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INVENTOR. en. c. SANCHEZ FIG.5

ATTORNEY.

HEAT DISSIPATING LAMP HOLDER This invention relates in general to lamp holders and more particularly to lamp holders for holding high wattage, heat producing lamps, namely quartz lamps.

Heretofore, the methods employed for dissipating heat from lamp holders has been to mount a lamp holder on a heat sink or to attach a heat sink to the lamp holder. Attempts have also been made to contain the heat within the lamp holders by encasing the lamp holders in insulating materials.

It is therefore an object of this invention to provide animproved apparatus for dissipating heat from a lamp holder.

Another object of this invention is to provide an apparatus for dissipating heat from a lamp holder by the use of baffles.

A still further object of this invention is to provide an apparatus for dissipating heat from a lamp holder by the use of dissimilar material positioned-about the lamp holder so that they are in juxtaposition with each other.

A still further object of this invention is to provide an economical, small, compact and easily assembled apparatus for dissipating heat from a lamp holder.

To these ends the invention contemplates the use of bushings or baffles which are made of two types of metal, beryllia and steatite. These materials have been found to be good and poor conductors of heat which means that they will dissipate heat. The baffles are shaped so that they present a large skin area to the surrounding media thereby providing a means for dissipating heat. The baffles are held together by a screw, which also makes contact with the lamp, so that the baffles are all axially aligned with each other and the lamp. The baffles are positioned so that the dissimilar materials of each of the bafiles contact each other. The dissimilarity of the materials adding to the baffles heat dissipating properties.

The invention has other objects and advantages which will appear from the following description of a particular embodiment of the invention in conjunction-with the accompanying drawings, in which:

FIG. 1 is a side elevational view of the invention;

FIG. 2 is a front elevational view of the invention; and

FIG. 3 is a sectional view of the invention taken along line With reference to the drawings the particular embodiment shown there of the invention comprises, in general, a screw 10 on which baffles 11, 12, 13, and 14 are mounted. The screw 10 is preferably made of brass so as to better conduct electricity I and the baffles are made of steatite and beryllia both materials having poor and excellent heat conducting capabilities. The baffles are cylindrical in shape and have a collar 19 molded thereon. The baffles are mounted and positioned on screw 10 so that baffle 11, which is made of steatite is closest to the head of screw 10; In juxtaposition to baffle 11 is baffle 12 which is also made of steatite. Baffle 13 which is in juxtaposition with baffle 12 is made of beryllia and baffle 14 which is made of steatite is in juxtaposition with baffle 13. The baffles are all positioned so that they face the same direction. The collars 19, providing for the freedom of air or surrounding media to contact the heat dissipating material of the baffles.

A contact receptacle l'which is made of beryllia is positioned on the screw so as to be in juxtaposition with baffle 14 and is held on screw 10 by means of a brass nut 16. The contact receptacle is cylindrical in shape and has a recess 21 counterbored therein for receiving the nut 16 and one end of a quartz lamp.

The end of the screw 10 is pointed 22 so that it can act as a contact point with the base of a lamp (not shown). A brass terminal 17 is fastened on screw 10 between the head of the lained to indicate how the parts enumerated above operate ogether to perform a useful function in a new and novel manner.

Whenever a high wattage lamp which gives off or generates a high temperature is used it would be mounted in the lamp socket or receptacle 15 of the instant invention. It has been demonstrated by experiments performed by the inventor that the heat generated by a high wattage lamp which is in the temperature range of 500 F. and 600 F. is dissipated by the receptacle l5 and baffles 14,13, 12 and 11 respectively. The temperature drops to desired levels depending on the diameter of the baffles. Besides the fact that the particular materials used for the baffles'have good heat dissipating properties the dissimilarities of the materials in juxtaposition and in contact with each other add to the heat dissipation properties. Additionally, the receptacle and the baffles have a large skin area exposed to the surrounding media which helps to dissipate the generated heat.

It should be noted that thecollar 15 being made of beryllia, which is an insulator and is also an excellent conductor of heat, will bring the temperature at the contact of the lamp to the surface of the collar 15. Baffle 14, made of steatite, which is also an insulator but with poor heat conducting qualities,

will provide dissimilar temperatures on two surfaces around spacer 19. The convection process resulting will greatly enhance the dissipation of heat. Baffle 13, also beryllia, will further extract hea't that would normally be transmitted through the screw 10 to the terminal 17. The object being to reduce as much as possible the very high temperature emitted by a quartz lamp from reaching the electrical connection used to light the lamp.

Although I have described a particular embodiment of the invention, it is understood that the present disclosure has been made'by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.

1. A heat dissipating lamp holder comprising a lamp receptacle composed of beryllia, a plurality of baffles positioned whereby they are in juxtaposition with each other and said receptacle, said baffles being made of steatite with at least one baffle made of beryllia, said beryllia baffle being disposed between the other of said steatite baffles, and a fastening means for holding said receptacle and said baffles together.

2. A heat dissipating lamp holder as claimed in claim 1 wherein said receptacle is made of beryllia.

3. A heat dissipating lamp holder as claimed in claim 2 wherein said baffles have'a collar for providing more skin surface to said baffles.

4. A heat dissipatinglamp holder as claimed in claim 2 wherein a tab type terminal is connected to said fastening means for providing a means for bringing electricity to said lamp receptacle.

5. A heat dissipating lamp holder as claimed in claim 3 wherein a mounting bracket is mounted about said collar of one of said baffles. 

